Spark plugs only ignite the fuel mixture near the spark gap, reducing the combustion efficiency, and the metal that makes them up is slowly eroded as they age.

火花塞只点燃火花隙附近的燃料混合物，这就降低了燃烧效率，并且随着使用年限增加火花塞中的金属慢慢被侵蚀。

youdao

The way fuel is "atomised" has profound effects on the efficiency of combustion engines.

燃料被“雾化”的方式对于内燃机效率有着深远的影响。

youdao

The way fuel is "atomized" has profound effects on the efficiency of combustion engines.

燃料被“雾化”的方式对于内燃机效率有着深远的影响。

youdao

"We really and truly expect that fuel cells are going to double the fuel efficiency of the best internal combustion engines and in some cases triple it, " Roan said.

CNN: Bus showcases fuel cell technology

High-efficiency internal combustion engines combined with lightweight materials can dramatically increase fuel efficiency in cars and trucks.

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